var counter = function (arr) {
  console.log('there are ' + arr.length + ' elements!')
}

var add = function (a, b) {
  console.log('the sum is ' + (a + b))
}

var PI = 3.1415;

// module.exports.counter = counter;
// module.exports.add = add;
// module.exports.PI = PI;

module.exports = {
  counter: counter,
  add: add,
  PI: PI,
}